Sep 23, 2013
08:06 PM
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Sep 23, 2013
08:06 PM
The backup clock fOFI generated internally is the default clock after start-up. It is used for bypassing the PLL for startup of the system without external clock. Furthermore it can be used as independent clock source for the watchdog module or even as system clock source during normal operation. While in prescaler mode this clock is automatically used as emergency clock if the external clock failure is detected.
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- IFX
4 Replies
Not applicable
Oct 17, 2015
12:28 AM
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Oct 17, 2015
12:28 AM
Hi,
I am working on XMC4100, i am trying to Configue the PLL with Internal Clock i.e., Fofi with Automatic Caliberation, as per datasheet the internal clock if automatic caliberation is taken then 24Mhz will be the clock,
trying to Configure the PLL to 2Mhz in normal mode with below information
Fpll = (N / (p * k2 ));
N = 80,
P = 12,
K2 = 80
but the clock is not configuring to 2Mhz, where might be the problem??
I am working on XMC4100, i am trying to Configue the PLL with Internal Clock i.e., Fofi with Automatic Caliberation, as per datasheet the internal clock if automatic caliberation is taken then 24Mhz will be the clock,
trying to Configure the PLL to 2Mhz in normal mode with below information
Fpll = (N / (p * k2 ));
N = 80,
P = 12,
K2 = 80
but the clock is not configuring to 2Mhz, where might be the problem??
Not applicable
Oct 20, 2015
11:34 PM
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Oct 20, 2015
11:34 PM
Is there any application note about configuration of the clock system?
Oct 21, 2015
09:56 PM
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Oct 21, 2015
09:56 PM
harshan wrote:
Hi,
I am working on XMC4100, i am trying to Configue the PLL with Internal Clock i.e., Fofi with Automatic Caliberation, as per datasheet the internal clock if automatic caliberation is taken then 24Mhz will be the clock,
trying to Configure the PLL to 2Mhz in normal mode with below information
Fpll = (N / (p * k2 ));
N = 80,
P = 12,
K2 = 80
but the clock is not configuring to 2Mhz, where might be the problem??
Did you select the correct input clock source for the PLL?
Not applicable
Oct 23, 2015
03:35 AM
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Oct 23, 2015
03:35 AM
Thanks for Reply,
Yes I Selected the PLL Clock Source as Fofi.
Yes I Selected the PLL Clock Source as Fofi.